Type-writing machine.



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TYPE WRITING MACHINE.

APPLICATION FILED FEB. 1908.

962,556@ PatentedJun 28, 1910.1.

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WILLIAM G. DUNHAM, OF NEW YORK,

N. Y., ASSIGNOR T0 'WYCKGFF, SEAT/ ANS &

BENEDICT, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented June 28, 1910.

Application filed February 8, 1908. Serial No. 414,971.

T 0 all whom it may concern:

Be it known that I, WVILLIAM G. DUNI-IAM, citizen of the United States,and resident of the borough of Brooklyn, in the city of New York, in thecounty of Kings and 'State .of New York, have invented certain new anduseful Improvements in TypelVriting Machines, of which the following isa specification.

My invention relates to typewriting machines and more particularly totype bar and hanger constructions.

The object of said invention is to provide a simple and efiicientconstruction of the character specified and to provide an efficientjoint and bearing between a type bar and hanger.

To the above and other ends which will hereinafter appear, my inventionconsists of the features of construction, arrangements of parts andcombinations of devices to be hereinafter set forth and particularlypointed out in the appended claim.

In the drawings, Figure l is a detailed side elevation showing a typebar and hanger embodying my invention, the segment, type rest and platesbeing diagrammatically shown in this view. Fig. 2 is an enlarged detailtransverse sectional view of the type bar and hanger, the section beingtaken on the line 0c-ae of Fig. 1 and looking in the direction of thearrow at said line. Fig. 3 is an enlarged detail fragmentary sectionalview corresponding to Fig. 2, the screw bolt and nut being omitted inthis view. Fig. 4 is an enlarged detail transverse sectional view of thelock nut.

The hanger 1, bifurcated at 2, is preferably made of two side pieces 3which form hanger arms. A spacing block 1 is interposed between thehanger arms, the parts being united by rive-ts 1". If desired, how ever,the parts of the hanger may be made in one piece. The block 1 isprovided with an opening 4 to receive a headed screw 5 by which thehanger may be secured to a type bar segment 6. The arms 3 of the hangerhave inwardly extending integral bearing projections 7 which arepreferably conical in form. These conical projections have centralopenings 8 and 9 which extend centrally therethrough and are countersunkin the hanger arms at 10 and 11 respectively. The opening 9 is a tappedopening as will be seen by reference to Fig. 3. The conical projectionsextend into corresponding recesses in opposite sides of a type bar 12.The conical recesses in the type bar communicate with a central opening18 in the type bar so that a screw bolt 14 may pass through the openingsin the hanger arms and type bar as shown in Fig. 2. The threads on thescrew bolt cooperate with the threads of the tapped opening 9 in orderto adjust the hanger arms relatively to each other and to properly seatthe conical projections within the bearing openings in the type bar andthus effect an adjustment between the hearing portions of the type barand hanger.

The adjustable means thus provided are effective to take up any wearthat may take place between the bearings of the type bar and hanger.

It will be observed that the screw bolt which connects the hanger armsis disposed axially of the pivotal axis of the type bar, at which pointadjustment between the bearing surfaces of the type bar and hanger maybe most efiiciently effected. The head 15 of the screw bolt is receivedin the countersunk portion 10 of the aperture 8, whereas a conical nut16 is received in the countersunk portion of the opening 9 in the otherhanger arm. The nut 16 is threaded at 17 for cooperation with thethreads on the screw bolt and constitutes a lock nut to prevent theaccidental turning of the screw bolt 14.

From an inspection of Fig. 2 it will be seen that the heads of the screw14 and nut 16 are flush with the outer sides of the hanger arms and donot occupy any space beyond the sides of the hanger so that the hangersmay be closely assembled on the segment. It will also be observed froman inspection of this figure that no portion of the screw bolt 1& bywhich the parts are adjusted comes into contact with the type bar andthat the conical projections 7 constitute the sole means for supportingthe type bar in place on the hanger.

In assembling a type bar and hanger the hanger arms 3 are first broughttogether to introduce the conical projections 7 in the bearing openingsor recesses in the type bar and the arms are riveted to the block 1*.The screw bolt is then inserted in place and the proper adjustmentbetween the hanger arms effected. The lock nut 16 may then be screwedinto place to prevent accidental displacement of the screw and in orderthat the parts will be not be displaced from the positions to which theyhave been adjusted.

What I claim as new and desire to secure by Letters Patent, is

In a typewriting machine, the combination of a bifurcated hanger havinginwardly extending exteriorly tapered projections, one of saidprojections having a central plain cylindrical opening, and the other acylindrical and threaded opening, each arm of the hanger having adepression connected with said opening, the depression in the armbearing the threaded perforation being conical, a type bar having an eyecomprising a central cylindrical portion and conical depressions at eachend thereof which match the exterior tapers of the said projections onthe hanger arms, the cylindrical portion of the eye of the type barbeing of greater diameter than the inner ends of the said taperingprojections, and larger in diameter than the cylindrical openingstherein, a screw passing through the plain cylindrical portion of oneprojection and through the cylindrical portion of the type bar andengaging at its threaded end with the threaded cylindrical portion ofthe other projection, the head of the screw being seated in one of thedepressions in one of the arms, and the threaded end of the screwprojecting int-o the conical depression in the other of said arms, and aconical nut having a threaded cylindrical hole engaging the extended endof the said screw and fitting said last mentioned conical depression.

Signed at the borough of Manhattan, city of New York, in the county ofNew York and State of New York this 7th day of February A. D. 1908.

WILLIAM G. DUN HAM.

Witnesses CHARLES E. SMITH, E. M. WVELLS.

